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Malachite is a copper-containing carbonate mineral with a chemical composition of Cu2[CO3](OH)2, CuO71.9%, CO219.9%, and H2O8.15%. Is a monoclinic system. The crystal form is often columnar or acicular, very rare, usually in the form of cryptocrystalline milky, massive, hull, tuberculous and fibrous aggregates. Concentric layered, fiber radial structure. There are green, malachite green, dark green and so on. Often with a strip, silky luster or glass luster, it seems transparent to opaque. The refractive index is 1.66-1.91, the birefringence is 0.25, and the pleochroism is colorless-yellow-green-dark green. The hardness is 3.5-4.5 and the density is 3.54-4.1 g/cm3. Sexually brittle, shell-like to jagged fracture. It reacts with hydrochloric acid and dissolves easily.
The difference between malachite and similar jade
Malachite is characterized by a special peacock green and typical strips, which are not easily confused with other stones, but similar to turquoise and chrysocolla. The difference is that the turquoise has a large hardness of 5-6, a small density of 2.6-2.9 g/cm3, and a small refractive index of 1.62. The hasronite has a small hardness of 2-4, a low density of 2-2.4 g/cm3, and a refractive index of 1.57.
Variety and evaluation of malachite
The varieties of malachite are common malachite, malachite gemstone, malachite opal, and blue malachite. Malachite gemstones are very rare malachite crystals. Malachite is used as ornamental stone and craft ornamental. It requires bright colors, pure and uniform, clear ribbons, and dense and non-porous blocks. The bigger the better. Malachite opal requires a positive background and a clear light band. Malachite can be carved into chicken heart pendants, egg-shaped ring faces, necklaces, and can also be made into stamp materials.
Malachite maintenance
Malachite is not durable and has low hardness. It can't keep good luster for a long time. It can only be used as beading and brooch. The Russians used malachite as a building interior material, and the large pillars of the St. Isaac's Cathedral in Leningrad were set with malachite. Malachite is also used to engrave various worship supplies and decorations, fireplaces and table tops.
Features
1, can enhance spiritual effectiveness
2, can relax nervous nerves, balance the ups and downs of emotional stress
3, can be used as amulet
4. It is made up of a variety of minerals, which has the effect of condensing friends and making communication more harmonious.
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